What are the precautions when industrial nanofiltration membrane treats pesticide production wastewater

Release Date:

2024-03-26

Source:


When industrial nanofiltration membranes treat pesticide production wastewater, there are several key considerations that need special attention:

First of all, strictly control the quality of incoming and outgoing water. Pesticide production wastewater usually contains high concentration of organic matter, heavy metal ions and trace toxic substances, which may cause damage to nanofiltration membranes. Therefore, it is necessary to pretreat the wastewater before water intake to remove the large particle impurities and suspended matter in it to ensure the normal operation of the nanofiltration membrane. At the same time, the effluent water quality also needs to be tested regularly to ensure that the treatment effect is as expected.

Daltonen nanofiltration membrane

Secondly, focus on the control of pressure and temperature. During the operation of nanofiltration membrane, pressure and temperature are two very important parameters. Excessive or fast fluctuations in flow and pressure can cause a limiting pressure drop in the membrane system, resulting in water hammer action, which can rupture the membrane elements. Therefore, when starting or stopping the membrane system, the pressure and flow rate must be slowly increased or decreased. At the same time, it is also necessary to pay attention to the temperature change, because too high or too low temperature may affect the performance of nanofiltration membrane.

In addition, regular maintenance and cleaning of nanofiltration membrane. Contaminants in pesticide wastewater may form deposits on the membrane surface, reducing the flux and separation performance of the membrane. Therefore, the nanofiltration membrane needs to be cleaned regularly to remove surface contaminants. When cleaning, the appropriate cleaning agent should be selected and the prescribed cleaning procedures should be followed to avoid damage to the membrane.

In addition, pay attention to the replacement cycle of the membrane element. The service life of nanofiltration membrane is generally about 2-3 years, when the performance of the membrane decreases to a certain extent, it is necessary to replace the new membrane components in time to ensure the normal operation of the system. When replacing the membrane element, ensure that the operation is standardized to avoid unnecessary damage to the system.

Finally, focus on the stable operation and troubleshooting of the system. During the operation of the nanofiltration membrane, it is necessary to check the operation status of the system regularly, including the change of flow, pressure, temperature and other parameters, as well as the performance of the membrane. Once an exception or fault is found, rectify it in time to ensure system stability and reliability.

When industrial nanofiltration membranes treat pesticide production wastewater, it is necessary to pay attention to many aspects such as water quality control, pressure and temperature management, membrane cleaning and replacement, and stable operation of the system. Through strict operation and maintenance, the effective operation of the nanofiltration membrane system can be ensured to achieve efficient treatment of pesticide production wastewater.

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